产品使用建议

 
 

球阀系列
BALL VALVE SERIES

 

截止阀系列
STOP VALVE SERIES

球阀应用建议
Suggestions on Application of Ball Valve

 

截止阀应用建议
Suggestions on Application of Stop Valve

     

非金属弹性密封的阀门,其最大允许泄漏量为零,金属密封的阀门,其最大允许泄漏量为0.1xDNmm3/S,所以合格的金属密封阀门可能会有微小泄漏量,因此,要求无泄漏的场合,尤其是管路终端,宜选用球阀。
管螺纹连接的球阀与管端的管螺纹相连接,其中内螺纹可以是圆柱管螺纹,也可以使圆锥管螺纹,而外螺纹必须是圆锥管螺纹。在安装时,应扳钳该螺纹同侧的六角或八角部位,不应扳钳球阀另一端六角或八角部位,以免造成球阀变形。
黄铜球阀的公称压力:1.6MPa,2.5MPa,4.0MPa,介质温度:
-20℃~120℃。当球阀用于饱和 蒸汽时,饱和蒸汽压力≤0.6MPa。
为延长球阀的使用寿命,球阀应作全开和全关使用,不宜部分开启作节流使用。因为部分开启时,流动着的介质会冲蚀和密封面,从而影响密封性。

The maximum permissible leakage of the valve with non-metal elastic seals is zero, and that of the ball valve with meal seals is
0.1xDNmm3/S. Therefore, acceptable valves with metal seals possibly have slight leakage. So, in the applications where must not be any leakage, especially at the pipeline ends, ball valves with soft seals should be used.
If the ball valve with pipe thread connection is connected with the pipe threads on the pipe end, its female thread may be parallel or tapered one, but its male thread must be tapered type. When installing the valve, it is necessary to clamp the hexagonal or octagonal position on the same side as its thread instead of the hexagonal position on the other end of the valve, so as to prevent the valve deforming.
Nominal pressure of brass ball valve is 1.6MPa, 2.5MPa, 4.0MPa, the temperature is -20℃~120℃. When the valve is used for saturated steam. The pressure of the saturated steam should be ≤0.6MPa.
To increase the service life of a ball valve, it should be full opened or closed instead of partial opening for throttling purpose, as when it is partially open, the flowing medium will erode the ball and sealing
surface and thus affect the sealing performance of the valve.

 

非金属弹性密封的截止阀,其最大允许泄漏量为零,金属密封的阀门,其最大允许泄漏量为0.1xDNmm3/S,所以合格的金属密封阀门可能会有微小泄漏量,因此,要求无泄漏的场合,尤其是管路终端,宜选用软密封的截止阀,而不宜采用金属密封的截止阀。
管螺纹连接的截止阀与管端的管螺纹相连接,其中内螺纹可以是圆柱管螺纹,也可以是圆锥管螺纹,而外螺纹必须是圆锥管螺纹。在安装时,应扳钳该螺纹同侧的六角或八角部分,不应扳钳截止阀另一端六角或八角部分,以免造成截止阀变形。
黄铜截止阀的公称压力:1.6MPa,金属密封介质温度:-20℃~180℃,非金属弹性密封介质温度:-10℃~110℃,当截止阀用于饱和蒸汽时,饱和蒸汽压力≤0.6MPa。
The maximum permissible leakage of the stop valve with non-metal elastic seals is zero, and that of the stop valve with metal seals is 0.1xDNmm3/S. Therefore, acceptable stop valve with metal seals possibly have slight leakage. So, in the applications where there must not be any leakage, especially at the pipeline ends, stop valves with soft seals should be used instead of that with metal seals.
If the stop valve with pipe thread connection is connected with the pipe threads on the pipe end, its female thread may be parallel or tapered one, but its male thread must be taper thread when installing the valve, it is necessary to clamp the hexagonal or octagonal position on the same side as its thread instead of the hexagonal or octagonal position on the other end of the stop valve so as to as to prevent the valve deforming.
Nominal pressure of brass stop valve is 1.6MPa. Medium temperature for metal seal is -20℃~180℃, and medium temperature for non-metal seal is -10℃~110℃. When the stop valve is used for saturated steam, the pressure of the saturated steam should be ≤0.6MPa.

 

闸阀系列
GATE VALVE SERIES

 

止回阀系列
CHECK VALVE SERIES

闸阀应用建议
Suggestions on Application of Gate Valve

 

止回阀应用建议
Suggestions on Application of Check Valve

     

                                                            ◎管螺纹连接的闸阀与管端的管螺纹相连接须控制管端外长度尺寸,以免管端过量旋入以致顶压闸阀管螺纹内端面,造成阀座变形而影响密封性。
黄铜闸阀的公称压力:1.6MPa,2.0MPa,金属密封的介质温度: -20℃~180℃。当闸阀用于饱和蒸汽时,饱和蒸汽压力≤0.6MPa。
为延长闸阀的使用寿命,闸阀应作全开和全关使用,不宜部分开启作节流使用,因为部分开启时,流动着的介质会冲蚀密封面,从而影响密封性。
硬密封不宜装在终端。





IIf the gate valve with pipe thread connection is connected with the pipe threads on the pipe end, it is necessary to control the external length of the pipe end in order to avoid excessive screwing in, which will pressurize internal end face of the pipe threads of the gate valve and result in deforming of the valve seat and damage its sealing performance.
NNominal pressure of brass gate valve is 1.6MPa ,2.0MPa,medium temperature for metal seal is -20℃~180℃. When the gate valve is used for saturated steam, the pressure of the saturated
steam should be ≤0.6MPa.
TTo increase the service life of a gate valve, it should be fully opened or closed instead of partial opening for throttling purpose, as when it is partially open, the flowing medium will erode the ball and sealing surface and thus affect the sealing performance.
Hard seal is unsuitable to be mounted at the terminal.
 

 

非金属弹性密封的阀门,最大允许泄漏量为零,金属密封的阀门,其最大允许泄漏量 为0.1xDNmm3/S,所以合格的金属密封阀门可能会有微小泄漏量,因此,要求止回阀无泄漏的场合,宜选用软密封的止回阀。
管螺纹连接的止回阀与管端的管螺纹相连接,其中内螺纹可以是圆柱管螺纹,也可以是圆锥管螺纹,而外螺纹必须是圆锥管螺纹。在安装时,应扳钳该螺纹同侧的六角部位,不应扳钳止回阀另一端六角部位,以免造成止回阀变形。
黄铜止回阀的公称压力:1.6MPa,金属密封介质温度:-20℃~180℃,非金属弹性密封介质温度:-10℃~110℃,当止回阀用于饱和蒸汽时,饱和蒸汽压力≤0.6MPa。

The maximum permissible leakage of the check valve with non-metal elastic seals is zero, and that of the check valve with meal seals is 0.1xDNmm3/S. Therefore, QC passed valves with metal seals possibly have slight leakage. Hence, in the applications
where check valves must not have any leakage, non-return valves with soft seals should be used.
If the check valve with pipe thread connection is connected with the pipe threads on the pipe end, female thread may be parallel or tapered one, but male thread must be tapered pipe thread. When installing the valve, it is necessary to clamp the hexagonal position on the same side as this thread instead of the hexagonal position on the other end of the valve, so as to prevent the valve deforming.
Nominal pressure of brass check valve is 1.6MPa and medium temperature for metal seal is -20℃~180℃, and medium temperature for non-metal seal is -10℃~110℃. When the non-turn valve is used for saturated steam, the pressure of the saturated steam should be ≤0.6MPa.